Can I have multiple home screen replacements on my phone?

I'm pretty sure I can do this, but I haven't done it yet for fear of losing the customization I've done in Launcher Pro.

I'd like to try out another one just for kicks. What other options are there, and can I have more than one on my phone with out problems? I have the HomeSwitcher app, so I'd assume this would let me switch between them if I have multiple ones.